I tie and fish married wings for steelhead in New York on the Salmon River. Yes they do work and they do not have to be perfect or works of art to be good fishing flies.
Just like any fly, every dog has it's day. I'll tell you what though......married wings look bad *** in the water and will always have a place in my salmon and steelhead box.
Here is a link to my blog that has some pictures of the married wings I have used.
http://www.glspeydee.blogspot.com/2011/11/tuesday-november-1-2011.html